And there is another thing I would like to tell you. A secret that I have been hide from anybody. The fact that I am a biological sister (dongsaeng) to one of EXO's Dance Machine, Kim Jong In aka Kai EXO.
After experiencing a sour relationship Yoona finally found the love of her life.He is none other than the famous EXO's Dancing machine Kai. But what happens when the past of her sour relationship appears to be Kai's closest person?? Will there be a happy ending of their love??